/*
 * Copyright 2002-2010 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

using System.Globalization;

namespace Spring.Expressions.Processors;

/// <summary>
/// Converts a string literal to a <see cref="DateTime"/> instance.
/// </summary>
/// <author>Erich Eichinger</author>
public class DateConversionProcessor : IMethodCallProcessor
{
    public object Process(object context, object[] args)
    {
        int argc = args != null ? args.Length : 0;
        switch (argc)
        {
            case 1:
                return DateTime.Parse((string) args[0]);
            case 2:
                return DateTime.ParseExact((string) args[0], (string) args[1], CultureInfo.InvariantCulture);
            default:
                throw new ArgumentException("date(<date> [,<format>]) expects 1 or 2 arguments");
        }
    }
}
